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enforcement sources tell nbc news the bombs were built to act like homemade ieds. sources tell nbc news the bombs included a battery pack and "the boston globe" reports investigators recovered a part of a circuit board at the scene. the bombs were packed with scha shrapnel. the bomb was not capable of creating a massive blast. instead, its main purpose was to maim and injure. photos obtained by whdh in boston showed the area where the bomb was left moments before and moments after the detonation. the fbi is looking at these photos and others like them for clues as to who placed the bombs and when. now there is precedent for devices like these. in 2004, the fbi sent out a memo on the use of homemade pressure cooker bombs. al qaeda's online magazine gave instructions for making them just last month and in the 2010 attempted attack on times square, one of the devices found included a pressure cooker and 125 firecrackers. meanwhile, the search of an apartment belonging to a foreign student injured in the blast has so far turned up nothing and he's not considered a suspect at this point. yes
investigative correspondent for nbc news. with me here in the studio is nbc news terrorism expert michael leiter. former director of the national counterterrorism center. thank you both for joining me. michael isikoff, let me go to you first. "the boston globe" is reporting that officials have recovered a second -- from the scene of the exploexs. what is your take on that? >> well, the fbi would not confirm that at the briefing we just had. they did confirm there are two devices, both in black nylon bags. search -- pressure cooker bombs. one point that i thought was quite interesting that fbi special agent in charge deloria made, these are heavy bombs. two heavy bombs in black nylon bags at two locations about 75 to 100 yards away from each other that were set off within 12 seconds. it remains an open question whether that could have been done by one perpetrator or more than one to have placed those two bags within a short period of time in this open, crowded area and not be noticed. it does raise questions whether one person could have pulled that off. i should tell you that a couple of other p
Search Results 0 to 2 of about 3 (some duplicates have been removed)